Comprag RECOM RCW Series, Operating Manual

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Version 2.3
remove the belt guard.
loosen the two bolts of the motor and the two corresponding nuts (1) on the left and right
sides of the motor.
Move the electric motor towards the compressor pump until tension in the belt wanes.
remove the old belt (2) from the flywheel of the compressor pump and pulley of the electric
motor.
install the new belt and tighten the belt with the appropriate tension force F (see table in §
3.7 Checking drive belt)
set the belt guard into place.
Check the belt tension within four hours of the compressor’s operation.
5.4 Servicing bearings of electric motor
When the compressor is used, fresh viscous lubricant (formulated for rolling bears) should
be added to the motor’s bearings. lubricant should be added using a special syringe for
viscous lubricants through lubricators accommodated in the motor’s bearing caps. the
volume of lubricant added can be calculated using the formula:
do not over-lubricate the bearings beyond the standard level as all excess lubricant will
be squeezed out of the bearings into the motor when the motor is running.
6. Fault handling
6.1 Faults and corrective actions
Problem. Possible faults. Corrective action.
The compressor starts up with
lag. There is a slow build up in
the electric motor’s speed.
Tighten the belt with the rel-
evant load.
The oil is thick. Replace the oil.
There’s a whistling during the
compressor’s operation.
Tighten the belt with the appro-
priate tensile force
The compressor won’t start.
The ambient air temperature in
the facility does not meet the
required temperature (below
+5°C or above +40°C).
Ensure the necessary ambient
air temperature where the com-
pressor is installed.